Tried it for a bit (2p speeds GR84 with double wiz). Not sure if it was really better - still had some "no hit" scenarios. However, AT without lightning lacks the high damage in Archon downtime that can finish off annoying mobs and also the stun. So not really an option imho.
There is this thread which is the single best resource for everything Manald Heal related at the moment.
As people are arguing in there, it might just be some skewed perception of RNG based on the fact that your attack speed fluctuates so much depending on Archon stacks.
About the Archon rune: When I ran speed rifts with Jamoose yesterday (double wiz action), and he had Black Hole, we observed sometimes that the color of the beam would change. Probably if you cast Black Hole and suck enough mobs in to give you more +cold% damage than your +lightning% on bracers, Archon gets overwritten and is cold instead of lightning (and thus no MH proc). Maybe there are some other, similar effects happening. But the color of the beam should tell if it's an elemental issue. I don't think the rune has any relevance, as it gets overwritten anyways due to the Tal sets which gives you all 4.
My guess is that it's a weird CC effect interaction, simply because that would offer another seemingly random variable coming into play. But no one knows at this point. At the end of the day, just because the wizard is not in the "meta", it'll take much longer to figure this out because not many people are playing it. If people were fine to actually clear 2-3 rifts lower (but 5x faster and with more fun) and ditch the stupid gen monk or WD, we'd resolve the MH issues much faster. But the "I have to play meta" perception of the community is just holding us back so much at the moment. I wish sheeple would wake up. Go play wizard everyone! Nothing's more exciting these days.